最佳实践是确定一个维护已声明数据类型的一致性的过程，以供构建复合应用程序的组织中的所有开发人员使用。
It's a best practice to identify a process for maintaining consistency in declared data types for use by all the developers in an organization who build composite applications.
此外，就像使用任何的类，你可以在程序中声明一个String类型的变量而不用考虑他们内部的结构。
Moreover, just as you could with any class, you can declare variables of type String in your programs and use them without considering their underlying structure.
Haskell会做一些类型推断，这意味着它会根据程序中的语义线索来推断元素的类型，所以您会看到我在使用有些函数时没有声明相关的类型。
Haskell does some type inference, meaning it infers the types of elements from syntactic clues in a program, so you'll see me use some functions without declaring associated types.
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